Discouraged!

So I got a positive I think on a test and I had the courage to do the digital, shouldn't have, period is due in next two days and it said not pregnant. Yeah threw me off. I usually cramp by now and I'm not having period symptoms. I'm agitated, tired, head aches, creamy white mucus, Boobs a little full not to tender, get dizzy sometimes when I stand up to fast, not in the mood for my favorite foods. Etc. Maybe im just over reacting and need to leave it alone. Someone talk to me please lol